Johno wrote:I have been looking at the spectrial on MS any advise on how to read it? what is swell one 2 3 etc
The spectrals break down the individual swells. The 'normal' forecast gives you one swell and one direction - but as Im sure you can imagine, there's all kinds of things going on.
There may be several swells with different periods and sizes etc at once. And these different swells can overlap, add up, or act against each other.
So swell 1, 2, 3.... is simply the different swells at a given (forecasted) moment. So look at the different swells - if they're all going in roughly the same direction, then you might be looking at a build up of swell.
Or maybe one swell at say 12ft 10s, and another at 2ft 5s, you could more or less ignore the second one.
The cleanest (and easiest to forecast) is one nice powerful swell with a decent period, for a long length of time. But you're in the UK, so thats a bit rare!
